“The difference between Specter’s vote on the big government stimulus bill and Specter’s vote on card check: a threat in the Republican primary,” Pat Toomey wrote this afternoon in a statement emailed to reporters. “It’s nice to see Sen. Specter reverse his position in a positive direction on card check, but I wish it didn’t take primary opposition to get him to do it.”

UPDATE:

More from Toomey:

“When Senator Specter does a flip flop, it’s worth checking the fine print. On the senate floor today he said: “I would be willing to reconsider Employees’ Free Choice legislation when the economy returns to normalcy.” In other words, if he thinks his political fortunes have improved, he will deny workers a secret ballot after all.”